| Date | Open | High | Low | Close | Volume | Adj Close*
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| Aug 15, 2012 | 10.08 | 10.25 | 10.02 | 10.17 | 359,700 | 10.17 | | Aug 14, 2012 | 10.18 | 10.18 | 9.98 | 10.07 | 575,100 | 10.07 | | Aug 13, 2012 | 10.21 | 10.27 | 10.01 | 10.17 | 415,500 | 10.17 | | Aug 10, 2012 | 10.34 | 10.37 | 10.06 | 10.20 | 464,000 | 10.20 | | Aug 9, 2012 | 10.14 | 10.50 | 10.14 | 10.34 | 584,800 | 10.34 | | Aug 8, 2012 | 10.29 | 10.34 | 10.08 | 10.11 | 516,900 | 10.11 | | Aug 7, 2012 | 10.10 | 10.62 | 10.10 | 10.36 | 585,500 | 10.36 | | Aug 6, 2012 | 10.00 | 10.24 | 9.97 | 10.08 | 825,800 | 10.08 | | Aug 3, 2012 | 10.09 | 10.20 | 9.93 | 9.98 | 940,000 | 9.98 | | Aug 2, 2012 | 10.02 | 10.10 | 9.80 | 9.88 | 975,600 | 9.88 | | Aug 1, 2012 | 10.45 | 10.64 | 10.04 | 10.15 | 1,152,500 | 10.15 | | Jul 31, 2012 | 10.22 | 10.50 | 9.83 | 10.44 | 1,734,900 | 10.44 | | Jul 30, 2012 | 9.26 | 10.34 | 9.17 | 10.19 | 5,043,100 | 10.19 | | Jul 27, 2012 | 9.69 | 10.57 | 9.05 | 9.06 | 18,377,700 | 9.06 | | Jul 26, 2012 | 23.60 | 23.70 | 23.15 | 23.32 | 552,300 | 23.32 | | Jul 25, 2012 | 23.03 | 23.44 | 22.98 | 23.43 | 303,000 | 23.43 | | Jul 24, 2012 | 23.20 | 23.20 | 22.74 | 22.99 | 195,000 | 22.99 | | Jul 23, 2012 | 23.13 | 23.18 | 22.55 | 23.16 | 246,100 | 23.16 | | Jul 20, 2012 | 23.63 | 23.63 | 23.20 | 23.49 | 247,100 | 23.49 | | Jul 19, 2012 | 23.65 | 23.91 | 23.35 | 23.80 | 217,500 | 23.80 | | Jul 18, 2012 | 23.86 | 23.94 | 23.44 | 23.60 | 243,300 | 23.60 | | Jul 17, 2012 | 23.51 | 23.98 | 23.30 | 23.98 | 270,400 | 23.98 | | Jul 16, 2012 | 23.48 | 23.65 | 23.20 | 23.41 | 147,200 | 23.41 | | Jul 13, 2012 | 23.30 | 23.80 | 23.21 | 23.62 | 312,000 | 23.62 | | Jul 12, 2012 | 23.12 | 23.31 | 22.83 | 23.23 | 321,800 | 23.23 | | Jul 11, 2012 | 22.85 | 23.36 | 22.80 | 23.35 | 197,000 | 23.35 | | Jul 10, 2012 | 23.23 | 23.45 | 22.72 | 22.79 | 173,300 | 22.79 | | Jul 9, 2012 | 23.58 | 23.58 | 22.91 | 23.17 | 240,000 | 23.17 | | Jul 6, 2012 | 23.86 | 23.98 | 23.38 | 23.57 | 179,700 | 23.57 | | Jul 5, 2012 | 24.86 | 24.89 | 23.91 | 24.14 | 353,500 | 24.14 | | Jul 3, 2012 | 24.21 | 24.97 | 24.19 | 24.97 | 479,200 | 24.97 | | Jul 2, 2012 | 22.61 | 24.35 | 22.27 | 24.25 | 986,200 | 24.25 | | Jun 29, 2012 | 22.30 | 22.30 | 21.94 | 22.12 | 268,400 | 22.12 | | Jun 28, 2012 | 22.08 | 22.26 | 21.45 | 21.89 | 195,600 | 21.89 | | Jun 27, 2012 | 22.71 | 22.75 | 22.22 | 22.26 | 267,600 | 22.26 | | Jun 26, 2012 | 22.24 | 22.75 | 21.46 | 22.68 | 547,400 | 22.68 | | Jun 25, 2012 | 21.41 | 22.36 | 21.34 | 22.29 | 508,600 | 22.29 | | Jun 22, 2012 | 21.43 | 21.80 | 21.28 | 21.68 | 2,607,000 | 21.68 | | Jun 21, 2012 | 21.41 | 21.80 | 21.18 | 21.27 | 379,900 | 21.27 | | Jun 20, 2012 | 21.38 | 21.78 | 21.26 | 21.45 | 289,700 | 21.45 | | Jun 19, 2012 | 21.31 | 21.68 | 21.24 | 21.33 | 435,400 | 21.33 | | Jun 18, 2012 | 20.20 | 21.50 | 20.13 | 21.35 | 754,800 | 21.35 | | Jun 15, 2012 | 20.24 | 20.57 | 19.94 | 20.22 | 683,500 | 20.22 | | Jun 14, 2012 | 20.30 | 20.37 | 19.93 | 20.18 | 463,800 | 20.18 | | Jun 13, 2012 | 20.54 | 20.63 | 20.10 | 20.22 | 733,800 | 20.22 | | Jun 12, 2012 | 20.97 | 21.23 | 20.43 | 20.58 | 595,400 | 20.58 | | Jun 11, 2012 | 21.21 | 21.29 | 20.86 | 20.94 | 635,400 | 20.94 | | Jun 8, 2012 | 21.01 | 21.19 | 20.96 | 21.05 | 396,300 | 21.05 | | Jun 7, 2012 | 21.75 | 21.90 | 21.02 | 21.14 | 416,000 | 21.14 | | Jun 6, 2012 | 21.37 | 21.89 | 21.17 | 21.73 | 294,600 | 21.73 | | Jun 5, 2012 | 20.97 | 21.48 | 20.68 | 21.14 | 436,200 | 21.14 | | Jun 4, 2012 | 20.95 | 21.15 | 20.70 | 20.96 | 328,000 | 20.96 | | Jun 1, 2012 | 20.95 | 21.18 | 20.58 | 20.99 | 339,400 | 20.99 | | May 31, 2012 | 21.55 | 21.61 | 21.10 | 21.24 | 597,900 | 21.24 | | May 30, 2012 | 22.01 | 22.01 | 21.46 | 21.50 | 557,400 | 21.50 | | May 29, 2012 | 21.98 | 22.49 | 21.55 | 22.19 | 467,900 | 22.19 | | May 25, 2012 | 21.80 | 22.41 | 21.76 | 21.91 | 632,700 | 21.91 | | May 24, 2012 | 21.26 | 22.20 | 21.20 | 21.65 | 767,200 | 21.65 | | May 23, 2012 | 21.09 | 22.13 | 20.90 | 21.79 | 526,000 | 21.79 | | May 22, 2012 | 21.40 | 21.73 | 21.09 | 21.33 | 390,000 | 21.33 | | May 21, 2012 | 20.32 | 22.15 | 20.32 | 21.39 | 956,600 | 21.39 | | May 18, 2012 | 20.46 | 20.80 | 20.28 | 20.36 | 451,500 | 20.36 | | May 17, 2012 | 21.10 | 21.17 | 20.19 | 20.54 | 611,900 | 20.54 | | May 16, 2012 | 21.66 | 22.18 | 21.55 | 21.61 | 473,700 | 21.61 | | May 15, 2012 | 22.28 | 22.41 | 21.55 | 21.66 | 345,600 | 21.66 | | May 14, 2012 | 22.68 | 23.11 | 21.77 | 22.39 | 578,100 | 22.39 | |
* Close price adjusted for dividends and splits. |
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